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All Patents of Type: steam check valves
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,324Apr. 17, 1849G. McKayPiston-valve cut-offsteam check valves
25,005Aug. 09, 1859B. FittsImprovement in governor-valvessteam check valves
30,138Sep. 25, 1860G. FrostCut-off valve for steam-enginessteam check valves
134,548Jan. 07, 1873J.C. HoadleyCheck-Valvessteam check valves
D45,941Jun. 16, 1914L. KassanderBoiler Check Castingsteam check valves
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